355 lines
7.8 KiB
C
355 lines
7.8 KiB
C
/* $NetBSD: dec_kn20aa.c,v 1.38 1998/04/17 02:45:19 mjacob Exp $ */
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/*
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* Copyright (c) 1995, 1996, 1997 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/*
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* Additional Copyright (c) 1997 by Matthew Jacob for NASA/Ames Research Center
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*/
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#include "opt_ddb.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/termios.h>
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#include <machine/rpb.h>
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#include <machine/cpuconf.h>
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#include <machine/clock.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#include <pci/pci_ioctl.h>
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#include <alpha/pci/ciareg.h>
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#include <alpha/pci/ciavar.h>
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#include "sio.h"
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#include "sc.h"
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#ifndef CONSPEED
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#define CONSPEED TTYDEF_SPEED
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#endif
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static int comcnrate = CONSPEED;
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void dec_kn20aa_init __P((void));
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static void dec_kn20aa_cons_init __P((void));
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static void dec_kn20aa_intr_init __P((void));
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static void dec_kn20aa_intr_map __P((void *));
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static void dec_kn20aa_intr_disable __P((int));
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static void dec_kn20aa_intr_enable __P((int));
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extern int siocnattach __P((int, int));
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extern int siogdbattach __P((int, int));
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extern int sccnattach __P((void));
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#if 0
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static void dec_kn20aa_device_register __P((struct device *, void *));
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#endif
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const struct alpha_variation_table dec_kn20aa_variations[] = {
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{ 0, "AlphaStation 500 or 600 (KN20AA)" },
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{ 0, NULL },
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};
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extern int comconsole; /* XXX for forcing comconsole when srm serial console is used */
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void
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dec_kn20aa_init()
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{
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u_int64_t variation;
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platform.family = "AlphaStation 500 or 600 (KN20AA)";
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if ((platform.model = alpha_dsr_sysname()) == NULL) {
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variation = hwrpb->rpb_variation & SV_ST_MASK;
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if ((platform.model = alpha_variation_name(variation,
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dec_kn20aa_variations)) == NULL)
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platform.model = alpha_unknown_sysname();
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}
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platform.iobus = "cia";
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platform.cons_init = dec_kn20aa_cons_init;
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platform.pci_intr_init = dec_kn20aa_intr_init;
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platform.pci_intr_map = dec_kn20aa_intr_map;
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platform.pci_intr_disable = dec_kn20aa_intr_disable;
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platform.pci_intr_enable = dec_kn20aa_intr_enable;
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}
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static void
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dec_kn20aa_cons_init()
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{
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struct ctb *ctb;
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cia_init();
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#ifdef DDB
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siogdbattach(0x2f8, 9600);
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#endif
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ctb = (struct ctb *)(((caddr_t)hwrpb) + hwrpb->rpb_ctb_off);
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switch (ctb->ctb_term_type) {
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case 2:
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/* serial console ... */
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/* XXX */
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{
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/*
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* Delay to allow PROM putchars to complete.
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* FIFO depth * character time,
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* character time = (1000000 / (defaultrate / 10))
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*/
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DELAY(160000000 / comcnrate);
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comconsole = 0;
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if (siocnattach(0x3f8, comcnrate))
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panic("can't init serial console");
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break;
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}
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case 3:
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/* display console ... */
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/* XXX */
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#if NSC > 0
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sccnattach();
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#else
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panic("not configured to use display && keyboard console");
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#endif
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break;
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default:
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printf("ctb->ctb_term_type = 0x%lx\n", ctb->ctb_term_type);
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printf("ctb->ctb_turboslot = 0x%lx\n", ctb->ctb_turboslot);
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panic("consinit: unknown console type %d\n",
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(int)ctb->ctb_term_type);
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}
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}
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#if 0
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static void
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dec_kn20aa_device_register(dev, aux)
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struct device *dev;
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void *aux;
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{
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static int found, initted, scsiboot, netboot;
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static struct device *pcidev, *scsidev;
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struct bootdev_data *b = bootdev_data;
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struct device *parent = dev->dv_parent;
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struct cfdata *cf = dev->dv_cfdata;
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struct cfdriver *cd = cf->cf_driver;
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if (found)
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return;
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if (!initted) {
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scsiboot = (strcmp(b->protocol, "SCSI") == 0);
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netboot = (strcmp(b->protocol, "BOOTP") == 0);
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#if 0
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printf("scsiboot = %d, netboot = %d\n", scsiboot, netboot);
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#endif
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initted =1;
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}
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if (pcidev == NULL) {
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if (strcmp(cd->cd_name, "pci"))
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return;
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else {
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struct pcibus_attach_args *pba = aux;
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if ((b->slot / 1000) != pba->pba_bus)
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return;
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pcidev = dev;
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#if 0
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printf("\npcidev = %s\n", pcidev->dv_xname);
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#endif
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return;
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}
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}
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if (scsiboot && (scsidev == NULL)) {
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if (parent != pcidev)
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return;
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else {
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struct pci_attach_args *pa = aux;
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if ((b->slot % 1000) != pa->pa_device)
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return;
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/* XXX function? */
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scsidev = dev;
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#if 0
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printf("\nscsidev = %s\n", scsidev->dv_xname);
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#endif
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return;
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}
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}
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if (scsiboot &&
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(!strcmp(cd->cd_name, "sd") ||
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!strcmp(cd->cd_name, "st") ||
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!strcmp(cd->cd_name, "cd"))) {
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struct scsipibus_attach_args *sa = aux;
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if (parent->dv_parent != scsidev)
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return;
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if (b->unit / 100 != sa->sa_sc_link->scsipi_scsi.target)
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return;
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/* XXX LUN! */
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switch (b->boot_dev_type) {
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case 0:
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if (strcmp(cd->cd_name, "sd") &&
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strcmp(cd->cd_name, "cd"))
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return;
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break;
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case 1:
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if (strcmp(cd->cd_name, "st"))
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return;
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break;
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default:
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return;
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}
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/* we've found it! */
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booted_device = dev;
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#if 0
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printf("\nbooted_device = %s\n", booted_device->dv_xname);
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#endif
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found = 1;
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}
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if (netboot) {
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if (parent != pcidev)
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return;
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else {
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struct pci_attach_args *pa = aux;
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if ((b->slot % 1000) != pa->pa_device)
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return;
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/* XXX function? */
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booted_device = dev;
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#if 0
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printf("\nbooted_device = %s\n", booted_device->dv_xname);
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#endif
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found = 1;
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return;
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}
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}
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}
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#endif
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#define KN20AA_MAX_IRQ 32
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void
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dec_kn20aa_intr_init()
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{
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/*
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* Enable ISA-PCI cascade interrupt.
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*/
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dec_kn20aa_intr_enable(31);
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}
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void
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dec_kn20aa_intr_map(void *arg)
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{
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pcicfgregs *cfg = (pcicfgregs *)arg;
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/*
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* Slot->interrupt translation. Appears to work, though it
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* may not hold up forever.
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*
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* The DEC engineers who did this hardware obviously engaged
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* in random drug testing.
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*/
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switch (cfg->slot) {
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case 11:
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case 12:
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cfg->intline = ((cfg->slot - 11) + 0) * 4;
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break;
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case 7:
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cfg->intline = 8;
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break;
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case 9:
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cfg->intline = 12;
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break;
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case 6: /* 21040 on AlphaStation 500 */
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cfg->intline = 13;
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break;
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case 8:
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cfg->intline = 16;
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break;
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case 10: /* 8275EB on AlphaStation 500 */
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return;
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default:
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if(!cfg->bus){
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printf("dec_kn20aa_intr_map: weird slot %d\n",
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cfg->slot);
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return;
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} else {
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cfg->intline = cfg->slot;
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}
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}
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cfg->intline += cfg->bus*16;
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if (cfg->intline > KN20AA_MAX_IRQ)
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panic("dec_kn20aa_intr_map: cfg->intline too large (%d)\n",
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cfg->intline);
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}
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void
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dec_kn20aa_intr_enable(irq)
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int irq;
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{
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/*
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* From disassembling small bits of the OSF/1 kernel:
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* the following appears to enable a given interrupt request.
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* "blech." I'd give valuable body parts for better docs or
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* for a good decompiler.
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*/
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alpha_mb();
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REGVAL(0x8780000000L + 0x40L) |= (1 << irq); /* XXX */
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alpha_mb();
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}
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void
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dec_kn20aa_intr_disable(irq)
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int irq;
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{
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alpha_mb();
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REGVAL(0x8780000000L + 0x40L) &= ~(1 << irq); /* XXX */
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alpha_mb();
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}
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